Depends on your route.
McMurdo station in Antarctica is supported by the United States. However, many other countries leverage the resources there to support their science, too. These other countries include New Zealand, Russia, Italy and more.
McMurdo Research Station is one -- and there are many others. You can review the list, below.
There are no cities in Antarctica. The largest settlement is McMurdo Station, which is a research facility, not a city.
There are 6,551 air miles between Denver and Ghana.
5,400,000 miles
Denver is 154.9 sq miles (401.2 km²).
About 1,090 miles.
1663 miles
213 miles
About 100.67 miles.
1111 miles